MERCURY Ourboard Engines- By BoatTEST (38867 views) 9/21/2009 10:34:53 AM asks its members to share their experiences with specific brands and models of outboards mated to specific applications in order to help new buyers of these products find the best match for their new purchase. Thank you for taking a few moments of your time to help other boaters.
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A. saunders 3/1/2015 12:02:51 PM
I have a mercury 100 horsepower with a with a 40 gallon gas tank and the primer ball will not pump gas all way up to the carburetors what could be wrongg

J. Bordelon 3/12/2012 10:41:58 AM
Hey Guys. I just hung a new 150 optimax in my 21 bay boat. Great fuel economy but..... As soon as I shift into gear, at idle it vibrates in a "come and go" pulsation. The shake is about every .7 seconds or so. As I speed up, the vibration gets pretty nasty until about 4K RPM. Even then, on a smooth day you can feel it though. I had a 200 2.5L merc 2 stroke on this same boat and replaced it with this motor, and the old 1999 200 was smoother than this. As mentioned, the vibration starts as soon as I put in gear. Anyone ever hear some ##!! like this?

B. Swinford 12/31/2009 5:54:05 PM
I have owned many mercury outboards, 1989 45 classic 50, 1991 50 hp,1991 90 hp and im about to purchase one of the last 2 stroke 90 hp for my latest boat. Other than some fuel storage issues the old 2 strokes are top notch from mercury. Brian

M. Scar 11/20/2009 11:25:22 AM
M. Scar I have a 2009 Mako express fitted with twin 200 L4 Verados. I have been having serious vibration issues running up the whole left side of the boat which Mercury can’t seem to address, other than to say the problem is relevant to the boat (Harmonics). I don’t see how mercury can advertise these engines as vibration free and whisper quiet. This issue has been reported from the first day the boat entered the water. I am very unhappy not only with the engines but with Mercury customer service. They have pretty well dumped the issue on Mako. Mako says they never heard of this before. I’m stuck between a rock and a hard place.

J. Thompson 10/26/2009 8:01:25 PM
J. Thompson - have a 2007 175 HP Verado supercharged 4 stroke on a 21ft. Whaler Dauntless; unbelieveably quiet, very responsive - great motor!

D. Allen 10/25/2009 4:54:37 PM
D. Allen I have a 07 150 Mercury Optimax on my GT-180 Glastron Bowrider. Runs great, starts immediately, quiet, good fuel economy and has great holeshot.

A. Leppaie 10/25/2009 3:11:59 AM
I have a 115 Mercury Optimax and 4 hp Mercury kicker on my 17 ft Tracker. Had them since 2006 and so far no problems. The Optimax is remarkably fuel efficient.

J. miller 10/24/2009 12:18:34 PM
I have 2 mercs, both 4 stroke. 90 hp 2007 and 5 hp 08. I went in to Cresliner with a strong bias in favor of Japanese technology but the deal I got had the 90 Merc. I got a 4 hp Yamaha for the kicker. HUGE mistake. Hopefully Yamaha, an otherwise dependable manufacturer throws all those motors in the drink. I replaced it with the 5 hp merc. Now both engines run perfectly and I do most my boating at 7,500 + altitude. I gained a new appreciation for the Mercury engines!

T. Coleman 10/23/2009 9:17:34 PM
Have a 07 115 4stroke best engine I have ever owned.

B. Rohner 10/23/2009 6:28:29 PM
Have twin 225 hp Verados on a Outrage 270, Great engines-quiet, fast acceleration with rev 4 props, 58mph on a heavy center console, no problems yet

J. Newton 10/23/2009 10:35:26 AM
I have twin 200HP OptiMax engines on my 26 foot World Cat center console. They are more than adequate to push this boat and will even plane on one engine, which is a great safety factor. I have had Mercurys for the past 40 years on my boats with very few problems. I would look at a Yamaha in the future, but probably would not switch over because of the need to do a complete control change. J. Newton

G. Borek 10/22/2009 9:40:27 PM
I recently purchased a new Suntracker 21 Fishing Barge with a new 2005 60HP Mercury 2 stroke. The dealer offered me this motor as a no charge upgrade over the standard 50HP. I only have 10hrs. on it but so far I'm very pleased with it. I wanted a 2 stroke carberated motor for simple reliability befor they are no longer available. It starts easily and after a minute warmup at 2500RPM runs very smooth and quiet. Smoke is negledgable. At 5400 RPM it pushes the pontoon boat to 26 MPH and is smooth and quiet enough to carry on a normal conversation. My previous boat was powered by a 4.3 V6 and at 4000 RPM it sounded like the pistons were about to blow thru the cylinder heads. What a welcome change. So far the fuel econmey seems reasonable.

G. Guernier 10/22/2009 6:09:52 PM
I have a Trophy 2502 with Verado 275 - have done 550hrs and superb! Power steering unit has been replaced but was completed under warranty - just love the motr, quiet, fuel efficient yet grunt on tap when need it!

R. Pierce 10/22/2009 1:33:27 PM
RedHornet72653 250 Pro XS Mercury, great engine with good fuel mileage and has not let me down. I have had many engines, many, and in the last 10 years 14 engines in 200 to 250 range with all being Mercury. This one is a 2010 boat with now only about 45 hours on the engine.

K. Gullo 10/22/2009 11:07:46 AM
2006 SeaPro 238CC matched with Mercury Verado 275HP...Love it, Love it, Love it!!! Best motor ever quiet & FAST!

K. Gullo 10/22/2009 11:05:32 AM
2006 SeaPro 238CC matched with Mercury Verado 275HP...Love it, Love it, Love it!!! Best motor ever queit & FAST!

K. Johnson 10/22/2009 10:11:20 AM
2007 Mercury 200hp Optimax on 19' Triton 190FS (fish and ski). Zero problems in three years of service, runs like a top. Best motor ever! Very satisfied!

A. Maceroli 10/22/2009 9:41:53 AM
I have a pair of 2006 150 HP Optimax engines on a 26' CC with approx. 400 hours. I had a temperature sensor problem and a trim problem with the port engine, both fixed under warranty. The engines start easily and run all day. Fuel economy is pretty good. Overall, I'm very satisfied with the engines.

R. Vogel 10/22/2009 7:10:07 AM
I have a 24' bentley tri-tube pontoon boat with a 07 merc optimax 200 which pushes the boat to 52 mph which is fast for a pontoon. The motor runs like a clock but is a little loud at wot. Also it uses irridium plugs which are very expensive. I just had them changed for the first time due to using gas with ethanol which I found out is bad for outboards, don't use it. Except for the annual gear oil changes the motor has been maintenance free, i would buy another one !

C. Therrian 10/22/2009 6:48:57 AM
C. Therrian I have a 2005 115 Optimax with 275 hr on it. The Optimax is on a 2005 17' SmokerCraft Pro Angler and the Optimax has performed awesome with no trouble at all. I can get 45 mph out of it, use to do over 50 mph but that before adding 3 more battiers and all my fishing gear. I've had no trouble with my 115 Optimax, I put in a water pump this spring. My Optimax is great on gas and it doesn't smoke. I would recamend the Optimax to anyone looking for reliable motor and on my next boat it will be a Mercury Optimax.

B. warren 10/22/2009 6:01:42 AM
I have a 2007, 200 optimax on a 18' Nitro Bass Boat. 72 mph, steady, always starts, perfect balance. I live on a lake and I have used the boat every day since I bought it Oct 21, 2007. I run the motor 40 to 50 miles each day, after I fish. Retired of course. Could not ask for a better engine.

D. Aubrey 10/21/2009 11:04:54 PM
I have a 2007 Optimax 115 on a 1903 Trophy. I have had virtually no problems (except for a sensor covered under warranty). I live in Hawaii, take it offshore frequently, 5-40 miles, even inter-island!! I have over 300 hours on it and use it as if my life depends on it, because it does. Love it. As we say it's "da Kine."

C. Leslie 10/21/2009 10:44:35 PM
Had a 60hp 4 stroke 2006 model. Ran well except I once experienced starting problems the dealer rectified (fuse I think). Motor was well priced. But I chose a 140 Suzuki for my current rig and would be unlikley to go Merc again.

D. Pate 10/21/2009 10:36:45 PM
1999 200hp Merc Optimax pushing a 22'Cape Horn Bay series (total weight 4380 as measured) with a 17 pitch 4 blade SS 15 1/4"wheel. Only problem during the last 10 years was A TPI in year 2 Never anything else so far. Use Optimax oil. Looking for 10 more years in the salt with her!!!

K. Guess 10/21/2009 10:26:53 PM
2004 50 hp two stroke on my bass tracker. Have used it more than average, runs great, starts quick and have had zero problems with it. Change my own water pump every two years, lower unit oil also. Have original plugs in it and it runs like a clock. Used Castrol Marine two stroke oil in it from the start. Have had a Yamaha outboard and liked it but really love the Mercury. Will buy another.

G. Gardiner 10/21/2009 10:16:33 PM
I have a 2008 Mercury 250 Pro XS on a Ranger 2250 SS. It failed, with a short in a wiring harness, after a few weeks, but otherwise has been rock solid. The boat handles very well with this engine; whether pulling into the slip, or flying to the next big spot. But the drool from onlookers can be a problem. And if that isn't bad enough, the boat draws even more attention. :-) Since the repair was fixed under warranty, and fixed the next day, I consider it water under the bridge. Although, Mercury did not cover the towing charge, which I think they should for a warranty problem.

T. Goodman 10/21/2009 10:15:58 PM
I have a 1999 175 EFI (V6) on a 1999 Procraft 180Bass 18 ft bass boat. When I brought the boat it was low on the number 3 cylinder. As part of the deal I was able to get the powerhead rebuilt and with the exception of a blown main fuse once (fuse was lower rating than what it was supposed to have been) I have not had any problems. I brought the boat in late 2007 and have approximately 60 hours on the powerhead and it still take me and my fishing gear to over 60 mph with a 23P Mercury Tempest Plus prop. This prop accelerates hard and cruises well with this hull. The Procraft hull is pretty heavy but that makes it very stable as I can drive it at 60 with one hand without any drama, especially since adding the SeaStar hydraulic steering this year. Very happy with this combination….but I can always use more speed…..

S. 40626 10/21/2009 10:04:27 PM
2008 - 150 Verado on my 2102 Trophy. I couldn't be happier. Cruise at 24 mph at 4000 rpm and I burn 6 gph. No problems after 150 hours. DTS is the best and so is my Trophy.

B. Weir 10/21/2009 9:50:36 PM
as a charter boat operator with a 25ft SeaCraft I have been using twin 135 Optimaxs for 12 yrs. Great engines would not run anything else. 650 on fist set and 500 on second set now

J. OBrien 10/21/2009 9:31:10 PM
J O'Brien I have a 2008 Merc 150 Optimax with 70 hrs on it so far. The only thing that has gone wrong with it so far was a faulty coil needed to be replaced under warranty. It has a great holeshot and awesome fuel economy with no smoke. It is mounted on a Glastron GT 180 and pushes it up to 58 MPH...eeehhhaw.

D. derolph 10/21/2009 8:39:10 PM
I purchased a new Sylvan 23 foot Mirage this summer with a 2009 Mercury 115hp 4 stroke. I love it! The motor is very smooth, quiet and performs beautifully. We can pull 2 tubes, have 5 or 6 adults on board also and get all the speed we need and then some. I would recommend this motor to anyone looking at the 115's out there.

G. Gomez 10/21/2009 7:06:23 PM
I have twin 2001 merc optimax 225hp powering my 2000 29 Welcraft coastal and have had no most equipment...if you take care of IT...IT will take care of you. George Gomez Woodbury, Connecticut

J. Clark 10/21/2009 6:17:49 PM
I have 2004 200hp carburated stars hard when hot all the time would not but agian

B. Hughey 10/21/2009 6:03:16 PM
2008 250 HP Verado on a Triton 225 Saltwater Boat, 85 hours, so far so good. Very smooth, fuel efficient, pushes the boat with ease, and dead silent at idle. Top End 55.6mph on 1/2 tank. Crusies comfortably between 35-38mph

A. Delucca 10/21/2009 4:48:12 PM
I change my Salt Water 150hp Mercury for an Optimax 150hp and was the best desition ever. Great speed, extremly quite compare to the carburator engine, no smoke, no vibration, great fuel and oil efficiency.

D. Williams 10/21/2009 4:07:36 PM
I have a 2000 135HP Optimax (V6) on a 2008 Polar Kraft 178FS. No issues at all with the motor since I purchased it new in 2003. Tons of power and extremely fuel and oil efficient. I also have a 2005 115hp Optimax on a 1996 25ft Crest II pontoon. Motor is also great on gas and oil. Seems to burn a little more oil than the 135 and also get a little more smoke than the 135. I have had 2 issues with this motor. 1. The motor pod of the pontoon was causing turbulance in front of the engine causing it to get air in the water intake. Subsequently got overheat alarm. Replaced the motor pod with Crest's new design and the problem was cured. 2. Number 2 cylinder gets alot of carbon build up from idling/low speed. Have to clean the plugs after about 50 hrs. since the electrode is almost completely encrusted in buildup. You can actually crunch it off in your hand. Been to the dealer, and no issues found. The marina I went to has a couple of other customers with the same issue on the same cylinder. I have operated boats with Mercs for 30 yrs. now, and they are still my first choice.

H. Martin 10/21/2009 3:49:59 PM
I had a 150 hp until this year no problems only cost has been routine maintenance

K. Severance 10/21/2009 3:25:07 PM
I have a 2006 Verado 275 on a Aluminum 24' Flats Tunnel hull that with only a little over 200 hrs on it has had zero problems and I am extremely happy averaging over 2.5 mpg and at cruise and up to 4mpg at 20 to 23 mph

T. Toskas 10/21/2009 3:24:22 PM
225 Opti-max ran fine, but sounded like a two stroke motorcycle that was dragging a chain. I replaced it with a 250 Verado, it was a grewat choice. One small problem with the original design of the fuel system. The desigh has been changed, and the problem fixed quickly under warrenty.

T. Favre 10/21/2009 3:24:18 PM
I have twin Merc 225's on a Wellcraft 32ccf. Great performing engines that have given me absolutely no problems.

T. Cahalane 10/21/2009 3:20:41 PM
I have a 22FT Trophy with a 150HP. saltwater mercy outboard, if left sitting for a week it's hard to start, it's an animel on petrol, great power, but i am so dissapointed in it.

C. Sevidal 10/21/2009 3:20:02 PM
I own a 2003 Mercury 90 two stroke outboard. Its hard to start it constantly dies. I have to change the spark plugs at least twice in a six month season. I know I'll never own another one.

T. Qualliotine 10/21/2009 2:55:52 PM
t.que i owned a 1997 200hp efi.i must say it was the worst bucket of bolts i have ever owned. i did not know the town offered to pay me for moquito contol,because i could not her them over the grind of the lower unit when shifting!JUNK

N. daher 10/21/2009 2:48:39 PM
I purchased a new 2006 optimax on a 20' bowrider, and used only in freshwater. At the2 year mark the oil injection system went and had a major tow bill to get home, at the 3 year mark fuel injection system went,major repair bill, mercury would not cover as warranty was over by 2 months Would NEVER buy another mercury! Worst outboard I've ever owned. Unreliable!

R. Duhon 10/21/2009 2:40:30 PM
I have a 1995 40 HP 3 cylinder 2 stroke Mercury tiller drive motor on a 20 ft. by 3 ft. aluminum boat tunnel hulled boat that I use for duck hunting, crabbing and alligator hunting in shallow water. I had one issue with it in all the years I have had it. The primer bulb went out on me, that is it. This is possibly the best motor that anyone can every own. It carries heavy loads and takes off in very shallow water due to weight and torque. It pumps out muddy water and never clogs up. It has one of the greatest water pump systems I have ever seen. And I like the shifter on the tiller handle instead of on the side of the motor. I have to run her wide open all the time to keep from getting stuck in shallow water and I have to take off at wide open throttle also. If this motor ever wears out, I am going to cry. It can't be beat for durability and dependability. It is a work horse.

R. Duhon 10/21/2009 2:31:53 PM
I have a 1994 Merc. 200 offshore carbed motor on a 1994 Proline 21 Sportsman center console boat. It came matched with the boat. It was my first Mercury. Since new, I have had to change out both power packs and the oil injection system went out on me 34 miles offshore. I live on the Northern Gulf Coast in La. and all I do is fresh water flush every time I get in from fishing. No winterizing. I change the plugs and water pump myself, once a year and never had any issues with them. For a 15 year old carbed engine, I think that is a pretty good motor. I would not think twice about getting another Mercury. It has been a great engine besides the 3 issues I have had with her in all these years.

P. Panasuk 10/21/2009 2:24:18 PM
2001 225 Mercury Optimax mated to 2001 Trophy 2302 Walkaround- The motor is smooth, starts on the first crank (even after sitting idle for a couple of weeks)- Excellent engine and power for this boat-Highly recommend Mercury

J. Beauchamp 10/21/2009 2:03:27 PM
2003 90 HP Mercury outboard. It is on a 2002 Sweetwater 2221SC 22ft pontoon boat. The motor has always ran great. The only thing I have had to fix is the water pump. I would like a little more power on my boat though. The boat is rated for up to 110 HP and I think the extra 20 HP would be nice.

Z. Bagwell 10/21/2009 2:03:09 PM
Z. Bagwell I have a 2005 Salt Water OptiMax that starts on the first crank, excellent mpg and burns very little oil! It's mated to my Triton 240 LTS and if I had to do it again I would definately buy another Mercury but would get a 300hp just for a little more top end.

W. Wolan 10/21/2009 1:45:50 PM
Happy with reliability, quiitness,fuel economy, easy starting and power of a 200 hp verado and 9.8 hp bigfoot. Both are easy to winterize in Calgary climate.

B. Mcmahon 10/21/2009 1:40:35 PM
I have a 1948 (yes 1948) 5 hp Mercury outboard. Drain the gas tank, which is on the top of the motor, not external, pull out the spark plug, squirt in some oil and next spring its ready to go. Plug back in, some gas and oil, couple of pulls and away we go. As far as storage goes, it sits on a rack (down position) for the winter in a boathouse that is not insulated or heated, so temperatures of -10F to -25F are not uncommon. Cannot get better than that. B. McMahon

G. Diaz 10/21/2009 1:31:54 PM
I have twin 225hp Verados (2005) on my '05 Proline 32 Express. With the exception of the thermostat dump fitting (in the '05s & early '06s) that corroded out and blasted saltwater all over the engines under the cowls (that was fun cleaning up), the motors are great. Lots of power and responsiveness (the supercharger is pretty impressive). I wish it were more fuel efficient, but it's still ok in that dept. (0.9 knmpg at 24-26knt cruise). I understand the new ones are more fuel efficient. These engines are really hi-tech, not sure if that's good or bad. I also had a problem with a pencil coil (#6; connects to sparkplug) going out. I've had the boat/engines since 4/09. Let's see how they perform in the coming years.

S. Devola 10/21/2009 1:27:18 PM
I have a 1990 merc 75 on an 18 foot Starcraft Supersport. Still starts on the first turn of the key and runs like a champ. Had to replace the oil injection lines since they were old, brittle, and cracked. Otherwise nothing but yearly lower unit lube changes and some SeaFoam in the tank.

A. Mihajlovic 10/21/2009 1:14:05 PM
I have a 1988 35 hp merc with tiller handle on a 14' springbok resorter aluminum boat. She flies, as many a fibreglass boat can attest to. No problems until this year. I left the motor outside in the up position last winter and now the gears do not mesh. Water must have gotten in to the lower unit and froze. My error. The top end still runs like a dream, very free revving motor. I still love it.

C. Hughes 10/21/2009 12:58:50 PM
I have a 50 hp Mercury 2 stroke. Very dependable. On initial daily startup, I Need to let it idle for 60 seconds or it will die. But other than that it is a good, solid engine and easliy powers my 17 ft Bass Tracker.

D. Morgan 10/21/2009 12:54:10 PM
Duke Morgan I have a 2008 Mercury 115 Hp with fuel injection. It powers my 21 foot pontoon boat with three logs. So far nothing but oil and filter and it runs great. Economy is also very good. Have towed other boats that have been in trouble and no problem. The 115 with fuel injection seems to be a good motor.

B. Love 10/21/2009 12:39:05 PM
I bought one of the last two cycle 25 horse Mercurys in 2005. Always loved this motor even when it was like a 20 horse model its a classic. Light weight powerful runs great. I am glad I have it.

M. Pandolfo 10/21/2009 12:31:01 PM
2000 Merc 60 2-stroke Bigfoot on 22' Sweetwater pontoon. Abolutely bullet proof. I bought new spark plugs 2 years ago but have not found any good reason to install them. Runs fine, idles fine, and starts easily. 2-stokes may not be very green, but they definitely win hands down on the maintenance end of things.

R. Pape 10/21/2009 12:29:23 PM
2003 125HP Merc 2 stroke. Carb. Very hard to start from day 1. Once started it ran fine. Plan on replacing spark plugs every year with normal use or every other year is not used much.

D. Ganter 10/21/2009 12:28:26 PM
2008 225 ProSX on a 20' fish and ski. Had a minor oil leak when new. The dealer fixed this and since have had no issues. It runs great and blows the doors off of similar boats with HO Evinrudes and Yamahas.

M. Wedlake 10/21/2009 12:20:30 PM
2002 240 HP Jet drive on Bombardiere Utopia has been trouble free for seven years. Lots hours but with proper maintenance as well.

R. Gallagher 10/21/2009 12:18:01 PM
Own a low hours 2003 40HP Merc two stroke mounted on my kids Whaler. Nothing but problems, including an ignition fire under the cowl that thankfully burned itself out. Factory declined my request for relief on the costly repair. Conversely, my twin Yami 250's mounted on the back of my Southport have been flawless after over 500 hours. I've always been a buy American guy, but I will never buy another Merc, nor will I ever buy a boat with one mounted on the back.

E. Strand 10/21/2009 12:13:36 PM
TWIN 00' 150HP OptiMax, Worst motor I have ever had the displeasure to own...2 power heads at 1000 hours, 6 sets of injectors, over heated from the first day, eat spark plugs like it going out of style, 1 compresser, $25 spark plugs X 12, needs water pumps every 60-80 hours, 1 starter, air handlers fall apart all the time. The only good part of the whole deal other then getting rid of them and putting F150 Yamaha that NEVER miss a beat was the lower units, never one problem with those...DONT DO IT!!!! MERC. SUCKS!!! I could go on but what's the point!

G. Franzini 10/21/2009 12:03:09 PM
1999 150 HP optimax. put 2400 hours on it, runs very well.had major overhaul ( cyl lining, rings, etc), plus 4 injectors replaced so far.Reliable engine, but likes to be well taken care of

D. Turbeville 10/21/2009 12:01:52 PM
I have twin 2008 Gen II Mercury Verado 175s with 410 hours on them. So far the only glitches are decals peeling off one motor, and water spitting out the flush kit on the other. Other than that, their performance is great. I get 2 to 2.3 mpg optimum on a 25' Trophy walk-around hard-top. They are quiet, clean,very responsive and reliable so far.

R. Baylor 10/21/2009 12:01:06 PM
1997 Mercury 200HP Offshore which came pre-matched to a 1997 Wellcraft 23' Walkaround. The motor has performed flawlessly for the past 12 years. I also have a 1999 15HP extended shaft that I use for both trolling on my 23' and as the primary drive for my 14' aluminum. Although it has never required repair, it does have it's quirks. Often, it will bog down when the throttle is opened, and if you don't immediately close the throttle, it will stall. You have to "goose" it a few times before it will allow the throttle to be opened without wanting to stall. It's done this since the first or second season.

J. Milanovits 10/21/2009 11:38:27 AM
I have a 2005 Mercury 150 XR6 it is a good engine a little noisey and sucks up a lot of gas to start but it runs well and with general maintenance keeps my boat moving all the way up to 60MPH. I have it on a 18' Nitro.

J. Tomaino 10/21/2009 11:17:55 AM
I have a 2004 Mercury 125 Classic on a Sea Ray 185. I have to say this motor has been a major disapppointment! I have about 120 hours on it and many more than that in the shop. Left me stranded more than once...sorry Mercury going to a Yamaha!!

B. Zarko 9/29/2009 3:49:48 AM
Z.Babic My mercury 9HP ('93.yr.) is excelent, and is placed on the (classic) Glastron boat V-162 from the 1979.yr. The maximum speed against wind and waves is 42 MPH on 5000 RPM. Even old, it is excelent combination, specially for watter skiing (constant pull on slalom and trick). I had only minor problems with electrical contatct on power trim,control box and ignition, and problem with broken rocker-run in the hydraulic system of power trim.

G. Daul 9/28/2009 1:55:49 PM
2001 Optimax 175 hp. No problem of any kind. 2006 Optimax 150 hp. No problem of any kind. Get 7 mpg with Ranger 188 at 30 mph.

R. Craft 9/26/2009 12:17:15 PM
I have twin Merc 300X's on a CAT (counter rotators). The boat is a 2003 as are the motors and I have about 300 hours on them. So far I have replaced one lower unit gearcase for about $5K and one powerhead for about $5K. I pull 15x34 cleavers and sometimes I run fast in rough water ... as a result I have replaced the "mid shaft" (shaft that connects the powerhead to the lower unit) on both motors twice - this is due to lots of torque and big surfaceing props. Overall I would say they are fast, thirsty, and for a real live go fast boat ... pretty reliable. I hae run I/O's in the past with blowers and nitrous and have had many more mechanical problems makeing them live than the outboards. I consider my experience just the cost of running a hot rod boat. Not perfect, but better than the other options that run over 100 MPH in less than perfect conditions.

J. H 9/26/2009 8:35:01 AM
I have a 90 hp Optimax on a Tracker V-18. Great motor. Starts everytime, runs quiet and seems to run forever on a tank of gas.

D. Hoskings 9/24/2009 4:05:22 PM
thought you might be interested in thoughts from Gt Britain, I have had a 1997 90hp elpto, Merc for the last 8 yrs, A bit thirsty on the gas but has never let me down ,Replaced the plugs every other yr and have renewed the water pump twice,changed the gearbox oil every other yr,a little noisy on the ears at w.o.t. Dave Hoskings. Cornwall. England.

A. Wong 9/24/2009 12:32:32 PM
05 Merc 90hp 4 stroke fuel injected. This is the Merc/Yamaha engine and it runs very well, but not a quiet and it vibrates more than a pure yamaha. Only real problem is that the shifter is terrible as it is hard to find neutral. Mileage is great, running 5-7 mpg on a Montauk 170.

M. Houle 9/24/2009 11:38:17 AM
05 Merc 150 EFI on a 2006 Tahoe 215. Great top speed ~54mph. no power steering major negative. does not pull well with 3+ people on tubes. Water pump has failed twice now impeller is going... only 40 hours on engine.

R. Russell 9/24/2009 11:07:24 AM
I have an 06 merc 60 4 stroke. Best little motor I've ever had. very quiet and dependable

C. Wells 9/24/2009 7:27:44 AM
Bought a Force by Mercury 40hp, 1999 model that was barely used before the owner blew it up and traded for another motor. I bought it from my mechanic after he rebuilt it and have been very, very satisfied with it and have put many hours of enjoyment on it fishing fresh and saltwater.

L. Zawacki 9/24/2009 12:30:19 AM
I have many 2 strokes From 6 to 85 HP And one 9.9 Honda I liked the little Honda .So when I baught my New 1850 Lund Tyee last year I put A 150 Mercury Verodo And let me tell you it is the best 4 stroke on the water. I have never had an engine perform so well. In bottom end mid range and top end it just performs. My brother inlaw has a 115 Yamaha and has tride my boat and cant get over how quiet it is and the quick throttle responce. All I can say is WHAT AN ENGINE.

H. Carlile 9/23/2009 11:44:13 PM
I had a 150 Saltwater Optimax on my last boat, a 19' Alumaweld Formula Vee. The motor never gave me any trouble and got excellent mileage, but I only put about 60 hours on it. My wife hated it. Mercury two-strokes are too loud. I sold the boat and motor and bought a Striper with a 200 hp Yamaha four-stroke and 8hp Yamaha four-stroke kicker. Much quieter. I've also owned three Honda 8 hp four-strokes over the years and love them.

M. Beauchamp 9/23/2009 9:17:55 PM
Great engine except for bad coils.Add to replace 3 coils engine is a optimax 115hp 2008!!

M. Schwartz 9/23/2009 8:36:03 PM
M. Schwartz BW 28 Outrage, twin 2001 Optimax 225. Great engines, but minor trouble starting. Same was true with my 2000 Optimax 225 ona BW 23 Outrage. I think that they use a lot of oil. They run flawlessly - about 400 hours on each.

R. Holly 9/23/2009 8:17:24 PM
I have a pair of 225 four strokes 2004, they are quite smooth fuel-efficient and extremely dependable. The only problem I've had are the decal separated from the motor cover. LOL

C. Shifrin 9/23/2009 8:09:17 PM
06 225 Verado on 23'walk around. Awesome performance,dead quiet and smooth. 350hrs no problems.

D. Russell 9/23/2009 7:55:32 PM
Have 2005 225 4 stroke, Quiet, reliable, no problems. Have owned many OMC and Yamahas over the years. By far, Mercury is the best out there!

W. Wagner 9/23/2009 6:40:25 PM
W Wagner, have 300+ hrs. on 115 efi four stroke 0n 20" wa cuddy, made several trips off shore fishing NC. 60+ mi. 3Hrs. out 3Hrs. back troll all day, no problems. Most trips 60+ mi. never skips a beat. Have never burned more than 45 gal. gas on a trip.

B. Rohner 9/23/2009 5:27:36 PM
twin 225 verado;;excellent in every way

L. Meeks 9/23/2009 5:05:17 PM
My 06 90 stk is a very fine motor. No problems at all and except normal maintenance I haven't spent a dime. Unfortunatly this will be my last Merc as they are closing the Stillwater Oklahoma plant after using it as a leverage against the union plant

R. Eddins 9/23/2009 4:38:15 PM

G. Sewell 9/23/2009 4:38:05 PM
50hp EFI: A real fuel miser; I can fish, mostly trolling, for two-weeks on 8-10 gallons! I’ve owned mine since 2004. Had to replace the entire lower gearbox during the second year of operation, covered by the warranty. I fish mostly the high mountain lakes of Colorado—the motor always starts on the first attempt—excellent. The fuel injection is ideal for our lakes between 5000 and 9200 feet above sea level. Smooth and quiet. I use it on a 16 ½ foot Lowe boat. Sometimes I wish I had a 90 hp; but then again I can’t bet the fuel consumption…

R. Krupp 9/23/2009 4:36:10 PM
2006 115 4 stroke, 200+ hrs. no problems, great on fuel.

C. Perri 9/23/2009 4:28:02 PM
2006 Verado 250 on a Boston Whaler 235 Conquest. Almost 400 hours on it and it has been a dream. Quiet and dependable with tourque to spare. Been to the Bahamas 3 times as well.

J. Newton 9/23/2009 4:27:32 PM
I have twin 150 saltwaters. The starboard is great. The port smartcraft guage activates as a problem at 2000 rpm. When the mechanic is on board, it does not do it. It says the engine is too hot. Otherwise, they are great.

D. Archer 9/23/2009 4:06:45 PM
150 Optimax - Have had no problem, knock on wood in last 4 years. Quiet and powerful, good on gas. Probably not that many hours though. Maybe 300 tops.

E. Kovalev 9/23/2009 4:02:07 PM
the best motors in the world!

E. De Beer 9/23/2009 3:52:59 PM
I have a 2003 225 Optimax Outboard with 600+ hours and three months out of factory Extened warranty. Good furl econmy, I used merc DFI Oil and always use 93 Octane gasoline. This month I was hit with power trim tilt motor failure and alternator failure, approximately $1400 in repairs. But that was it over the six years of use. E.dbeer

J. Eldred 9/23/2009 3:13:52 PM
Have 2005 90HP that came on my Mako 172 that has been flawless, except for one issue. We use the boat over 25 hours a month fishing since new and have changed the water pump & done a tune up as preventive maintenance. The only issue I have had was the Marina where I keep my boat started selling gas with ethanol and didn’t tell anyone. The fuel filter was a canister type that rusted from the inside out leaking gas in the bilge and caused about $250.00 worth of repairs to the fuel lines both in the boat and the engine. Hopefully Mercury now makes their engines to use flex fuel.

B. Mccants 9/23/2009 3:07:44 PM
21 SeaPro with 150 Optimax. Two years, 225 hours and zero engine problems. Great on gas & oil. Do try to burn ethonol free fuel and use gas additives. 100% satisfied with the engine choice.

J. Macklin 9/23/2009 3:01:43 PM
I have a 2006 Boston Whaler Montauk with a 115 EFI 4 Stroke Merc. Quiet, good fuel economy, no problems in 3 years of ownership other than sender for oil gauge went bad that was repaired by the dealer under warranty.

S. Gaffney 9/23/2009 2:52:58 PM
I have a 28' boston whaler outrage with dual 250hp mercs. They are so quiet and perform well.

J. Voice 9/23/2009 2:51:25 PM
d. Lewis 2008 200 hp verado. Traded up to this motor from 97 150hp merc 2 stroke which was a great motor but noisy, smoky and loud. Was concerned about loss of power going to 4 stroke also weight was a factor as 18 and 1/2 whaler only rated for 150 hp. Very happy with verado so far, 80 hours except some vibration at low rpm which dealer is working on. Smooth powerful, quiet and fuel efficient. Smart craft guages take some getting used to, not sure if I like having everything on one guage that you have to keep scrolling to get the info that you want. Guage does provide a lot of useful information. Installion expensive due to new tecnology, drive by wire etc.

H. Greener 9/23/2009 2:44:16 PM
2007 175 opti, 20 hours. impeller went bad. Other than the impeller the motor has been great. Very good on gas.

M. West 9/23/2009 2:42:46 PM
1984 mercury 75HP 2 stroke= It has one carb rebuild in this whole time. motor has never been apart. It will still start with in 2 turns of the key! Runs like a top, just let it idle for about 5 minutes and warm up! It does not get any better! I have only done regular maintenance according to the manuel. I have had it since it was new.GO MERCURY!

D. Bravenec 9/23/2009 2:35:16 PM
2006 Verado 150HP, fantastic motor. Tremendous torque and power. Extremely quiet. Good fuel mileage. My only hope is Mercury resolves the fuel lift switch problem.

L. Rogers 9/23/2009 2:29:40 PM
Optimax 2007, 150 HP, great engine so far, a few minor "warranty" issues handled without incident at dealer. GREAT fuel economy, always willing to fire right up and run all day without complaint. I hope I am able to completely wear it out like the two Merc's before it. Before that 150 Mercury EFI 1995, also great engine, a bit thirst, but like all Merc's I have had no issues, other than normal expected items when it was 10+ years old, finally just wore it out, well over 2,500 hours of operation, and was still running, but just becoming "cranky". Before that a 120 Force (by Mercury Marine), great little engine, always smoked like crazy, but always ran, only failed to start once, one $150 part, and it never failed to start again, until the bearings in the lower unit, finally just gave up due to wear, again probably in the 2000-2500 hour range. A great side note here, all of these engines have been run in brackish or saltwater, granted with care, but very little if any corrosion issues were ever present.

C. Thomas 9/23/2009 2:24:07 PM
Optimax 2007 - 75HP... great engine have only 10 hours on it great fuel economy, very quiet starts at the push of the button even in the winter. Love it.

R. Ballou 9/23/2009 2:21:16 PM
R. Ballou 2006 Verado 150hp with 200 hours. No problems.

R. Stibbe 9/23/2009 2:09:10 PM
R. Stibbe 2006 25HP EFI, starts at the slighest touch of the button, and so quiet the fish don't have a chance. Added CMC power tilt & trim, wished I installed the tilt guage. Gets better mileage and top speed now. Only problem, the water pump "p-hole" plugs easily with sand from MI & IN lakes.

W. Fritz 9/23/2009 2:02:27 PM
W. Fritz Have a 2004 Merc 225 Saltwater Optimax.Purchased Used in 2006..Absolutely NO PROBLEMS, Great power with annual Maintenance at Southwicks Marina Beach Haven NJ. Fuel efficient and starts first time. I use Premium fuel and Mercury Optimax Oil. Run it from March til Dec. and have it winterized and shrink wrapped annually

J. Anderson 9/23/2009 1:58:52 PM
2006 Verado 150- Awesome torque and power and the supercharger can't be beat [by anyone]. The only thing is, they like good strong batteries so don't by a porche engine and a yugo battery. 5 STARS *****

R. Henfling 9/23/2009 1:58:05 PM
smart gage goes bad constantly this is third one in one year dealer wont warranty it

C. Robinson 9/23/2009 1:57:19 PM
Mercery 275 Verados. Have three on my 2007 38 Jupiter. Have not had the first problem and currantly have 540 hrs.

J. Carey 9/23/2009 1:56:29 PM
200 hp.optimax,2005. Blown Head gaskets (2) & other major parts. MFG.warrenty extension by 1 yr.expired.Now my nightmare starts. J.P.Carey

C. Pierce 9/23/2009 1:55:20 PM
optimax 2003 135HP air compressor bolts loosened up, destroyed compressor housing, bummer, will be watching closely after costly repairs.

P. Orlando 9/23/2009 1:38:41 PM
2005, 200hp Merc, carb version. Plenty of power, very reliable, and easy to maintain. I love it!!!

E. Bardfield 9/23/2009 1:22:29 PM
Although it's relatively heavy and expensive, my Verado 300hp has been the quietest most reliable outboard I've ever owned.

R. George 9/23/2009 1:22:23 PM
Mercury OptiMax 175 hp. Great fuel economy, lots of power, but lots of problems, numerous fuel injector replacements( cylinders 5 and 6 have been replaced annually), several water pumps didn't last a year, and a few other misc. issues. Mercury refuses to address this issue, other than continually fix it.